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Messages - BruceM

Pages: 1 ... 183 184 [185] 186 187 ... 198
2761
Listeroid Engines / Re: Cooling question???
« on: February 20, 2006, 03:46:59 PM »
Great post, Scott E.  Even with a condensor, hopper cooling would  have a lot more oxygen in the cooling fluid.  Now I feel better about setting up my truck radiator as a convection cooling system.   :)

Bruce M


2762
OK, so the corrogated pipe leaks and silicone tube fails.  Leaks are not OK for me, my engine shed isn't fan ventilated (no power when running compressor).

WWIprops-  Do you think the silicone would fail if it's further from the engine???  Did it tear, "blow out" or melt??? 

Bruce M





2763
Listeroid Engines / Re: Cooling question???
« on: February 20, 2006, 02:00:13 AM »
Thanks Hotater!  That will give me something to think about tonight.  Bruce M

2764
Listeroid Engines / Re: Cooling question???
« on: February 20, 2006, 12:22:53 AM »
Hotater- Thanks for your responce to my hopper question.  Could you make a wild guess of how much water the 6/1 would boil off in an open hopper in say 8 hours at 75% load?  This would help me make a good guess on the condensor area.


2765
Listeroid Engines / Re: Cooling question???
« on: February 19, 2006, 10:10:20 PM »

Bruce,

I would try to use an aluminum radiator as aluminum sheds heat better than copper/brass.

Copper/brass is great for drawing heat.

The ultimate would be a aluminum radiator with the inside eltroplated with copper.

Peace&Love :D, Darren

Uhmm- not really. Copper has a higher thermal conductivity, but the heat radiated off of a painted surface of any metal container filled with water would be the same.  More surface area would be more important that the metal choice, which is cost and corrosion related. 

Does anyone on the forum have experience with hopper cooling???  Inquiring minds...

2766
Listeroid Engines / Re: "Code talkers"
« on: February 19, 2006, 05:42:42 PM »
"The fun thing about these engines is what you can make out of them, not what you buy."

Ain't that the TRUTH!! Well said!

Great post, BobH!

2767
Listeroid Engines / Re: Cooling question???
« on: February 19, 2006, 05:29:48 PM »
I liked the tank approach too until I priced the antifreeze, and figured that it would have to be replaced every 2 years or so.  If your tank was freeze protected it would be very appealing.

My present plan A is to use a large truck radiator mounted outside the generator shed, thermosiphon flow with no fan.
I don't know how well this will work.  I'd love to use a cast iron radiator but can't find one in AZ.

I think a single inlet steam radiator could work fine as a condensor for a hopper style cooling system. 

Hopper cooling with enough condenser so that little water was lost seems about the simplest approach- only one pipe going outside the engine room.  An aluminum light pole with a  vent on top would be just about perfect.  (G.B.'s idea but not sure if he intended hopper or thermosipon.)
Imagine some air/steam venting from the top when the Lister(oid) gets warmed up.

I don't know if anyone here has tried hopper cooling.  It is bit counterintuitive and I'm not sure if a thermostat on the Lister head would be OK or not. (I think yes.)  Someone with hopper experience, please educate me.  A hopper with lots of condenser surface above it would solve the problem of huge volume of antifreeze.  You'd only need something reasonable like 4 gallons of fluid, the steam would fill the volume above and condense on the surfaces, running back into the reservoir.

Bruce M









2768
Thanks for the tip on the 2" silicone, WWIProps. That saved me some time and expense.  :)



2769
Listeroid Engines / Re: "Code talkers"
« on: February 19, 2006, 04:11:31 AM »
It would be great if we could get Listeroids made in Taiwan, though even there I'm sure a code talker is needed.

Jukebox- all your problems are the common ones.  As long as you have the hard line from the IP to the injector still OK, I'd say good riddance to the rest.  The fittings and filter, even the petcock on my (made in 2002) Metro all leaked badly, and even the IP banjo bolt was defective (hairline crack- weeped fuel and air).  I was very happy with the quality and price of the Utterpower Mico fuel filter unit, and George's banjo fuel fitting makes neat work of connecting to any fuel line fitting.

The concave tappets with very rough surfaces are also standard.  I hand honed the deep scratches out and polished mine (flat) and recut the oil groove in one, but George at Utterpower has replacement ones made in the USA by a good machinist for $40. I'd go that route if I were doing it over... one tappet has a spot where it almost hangs up (but does still rotate).  Check your rocker arm alignment and rocker/cap surfaces, check your valves, definately check head clearance with some lead (little chance of that being right). Every single item in the Utterpower manual.

At least someone made an attempt to line something up (bent bolts)!

Bruce M

2770
Listeroid Engines / Re: Mounting my 28/2
« on: February 18, 2006, 09:42:37 PM »
McMaster.com has 3/4" thick Nitrile rubber (shore 40) for reasonable prices- but not as good as the deals these guys are getting on horse mats!  Wish I'd thought of that.


2771
Jeff Maier uses 2" silicone tubing from McMaster.com to decouple engine noise from the exhaust.
From a note he sent me:

"For the flexible hose, go to www.mcmaster.com <http://www.mcmaster.com/>
and look for item # 55125K76. It's a 2" fiberglass hose coated with
silicone and good to 500 degrees. It's $9.94 per foot, but you only need
2 or 3 feet. With this, you can solidly mount your entire exhaust system
and keep any rattling, vibration, etc. to a minimum."

I checked at my local muffler shop and there are special flex sections that seem very well built and gas tight.  (About a foot long.)

I also wonder how to best mount the exhaust stack to the side of my engine shed. Let us know what you come up with and how it worked out, please.

Best Wishes,
Bruce M

2772
Listeroid Engines / Re: Bicycle Computer
« on: February 17, 2006, 12:41:28 AM »
Thanks Tom, that's a good suggestion.  I was going to have a sight tube on my 16 gallon "many days" tank anyway.  Now I'll make it 1/2" and I can use the same "magnetic tube capsule" sensing method that I'm using for low oil level.


2773
Listeroid Engines / Re: LUBRICATION RELATED
« on: February 17, 2006, 12:38:56 AM »
Chris is right.  You could get plenty of oil flow with an oil catcher scoop high on the breather door, and run it back in at the sump drain plug.  There's a lot of oil following the crank coming out and down at the breather door.

Or look for my earlier post on the internal gravity flow oil filter (Hotater II).  Then you have a use for all your old cotton socks and underwear.

Bruce

2774
Listeroid Engines / Re: Auto Shut Down
« on: February 16, 2006, 07:27:28 PM »
After reviewing the Start O Matic design (thanks Ken and Guy) I like the SOM approach of always inserting the decompression pin on shut down.  Thus every shut down is good for emergency runaway shut down.  This makes me want to redesign my valve lifter, as I don't think it would take years of that pounding as a good pin design should. 

On a related subject:  Giant scale model servoes could be used for both rack closer and decompression pin.  Here's one that has has 21 in-lbs of torque, on 6V.  It's $30.  When power is turned off the servo should stay where it was put.

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXLN94&P=ML

Most microcotrollers have RC model servo control commands and/or routines availble.  Picaxe has a servo command in it's interpreted basic that is compatible.

Bruce M



2775
Thanks Guy (and Ken) for this manual.  I'm printing it out now and can't wait to study it.
Bruce M

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